What is Grammar Fixer?

Grammar Fixer is Zerlo's free online platform for spelling and grammar error correction. Using state-of-the-art LLM technology, errors are automatically detected and highlighted directly in the text.

Our basic feature remains permanently free and allows unlimited document lengths – whether you want to check short notes or extensive reports. For advanced needs, we offer premium features like style and tone analysis, plagiarism detection, and AI-assisted rewrites.

Upload DOCX, TXT, or PDF files or simply copy and paste your text. Experience real-time correction instantly and optimize your texts in no time.

Ideal for students, bloggers, freelancers, and businesses who want to work without character limits, without paywalls, and with maximum transparency.